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    <title>cannon.js - impulse demo</title>
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    <script src="../out/cannon.js"></script>
    <script src="../build/cannon.demo.js"></script>
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        /**
         * Demonstrates how to add impulses and forces to a body. You can add the impulses and forces to any point on the body.
         * Adding a force to the body will add to Body.force and Body.torque.
         * An impulse is a force added to a body during a short period of time (impulse = force * time). Impulses will be added to Body.velocity and Body.angularVelocity.
         */

        var demo = new CANNON.Demo();

        var radius = 1, mass = 2, f = 500;
        var dt = 1 / 60, damping = 0.5;

        // Add impulse to the body center
        demo.addScene("center impulse", function ()
        {
            var world = setupWorld(demo);
            var shape = new CANNON.Sphere(radius);
            var body = new CANNON.Body({
                mass: mass,
                position: new CANNON.Vector3(0, 0, 1)
            });
            body.addShape(shape);
            body.linearDamping = body.angularDamping = damping;
            world.addBody(body);
            demo.addVisual(body);

            // Add an impulse to the center
            var worldPoint = new CANNON.Vector3(0, 0, 0);
            var impulse = new CANNON.Vector3(f * dt, 0, 0);
            body.applyImpulse(impulse, worldPoint);
        });

        // Add impulse to the top of the sphere
        demo.addScene("top impulse", function ()
        {
            var world = setupWorld(demo);
            var shape = new CANNON.Sphere(radius);
            var body = new CANNON.Body({
                mass: mass,
                position: new CANNON.Vector3(0, 0, 1)
            });
            body.addShape(shape);
            body.linearDamping = body.angularDamping = damping;
            world.addBody(body);
            demo.addVisual(body);

            // Add an impulse to the center
            var worldPoint = new CANNON.Vector3(0, 0, radius);
            var impulse = new CANNON.Vector3(f * dt, 0, 0);
            body.applyImpulse(impulse, worldPoint);
        });


        // Add force to the body center
        demo.addScene("center force", function ()
        {
            var world = setupWorld(demo);
            var shape = new CANNON.Sphere(radius);
            var body = new CANNON.Body({
                mass: mass,
                position: new CANNON.Vector3(0, 0, 1)
            });
            body.addShape(shape);
            body.linearDamping = body.angularDamping = damping;
            world.addBody(body);
            demo.addVisual(body);

            // Add an force to the center
            var worldPoint = new CANNON.Vector3(0, 0, 0);
            var force = new CANNON.Vector3(f, 0, 0);
            body.applyForce(force, worldPoint);
        });

        // Add force to the top of the sphere
        demo.addScene("top force", function ()
        {
            var world = setupWorld(demo);
            var shape = new CANNON.Sphere(radius);
            var body = new CANNON.Body({
                mass: mass,
                position: new CANNON.Vector3(0, 0, 1)
            });
            body.addShape(shape);
            body.linearDamping = body.angularDamping = damping;
            world.addBody(body);
            demo.addVisual(body);

            // Add an force to the center
            var worldPoint = new CANNON.Vector3(0, 0, radius);
            var force = new CANNON.Vector3(f, 0, 0);
            body.applyForce(force, worldPoint);
        });

        function setupWorld(demo)
        {
            var world = demo.getWorld();
            world.broadphase = new CANNON.NaiveBroadphase();
            return world;
        };

        demo.start();

    </script>
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